What will be the output of the following C# code?

class Program
{
    static void Main(string[] args)
    {
        int i ;
        for ( i = 0; i < 5; i++)
        {
            int j = 0;
            j += i; 
            Console. WriteLine(j);
        }
        Console. WriteLine(i);
        Console. ReadLine();
    }
}